Getting an Apostille starts with making sure your document is in the correct form. It must be a certified copy or have an original signature. After that, you submit your document to the competent authority. For example, the New Jersey Department of the Treasury issues the Apostille in NJ. This authority checks if your document and the person who signed it are genuine. If everything is okay, they attach the Apostille to your document. This special certification is proof that the other country needs to trust your document.